How severe is GHSA-rc4v-99cr-pjcm?

GHSA-rc4v-99cr-pjcm has a CVSS score of 10/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by GHSA-rc4v-99cr-pjcm?

GHSA-rc4v-99cr-pjcm affects the following packages: @seal-security/mongoose-fixed (npm). Ecosystems affected: npm.

How do I fix GHSA-rc4v-99cr-pjcm?

Update @seal-security/mongoose-fixed to 5.3.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-rc4v-99cr-pjcm is resolved across your whole dependency graph.

How do I detect GHSA-rc4v-99cr-pjcm in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @seal-security/mongoose-fixed, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-rc4v-99cr-pjcm if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against GHSA-rc4v-99cr-pjcm?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-rc4v-99cr-pjcm can be triaged on real exposure rather than presence alone.

Is GHSA-rc4v-99cr-pjcm actively exploited in the wild?

No public exploit code has been indexed for GHSA-rc4v-99cr-pjcm yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-rc4v-99cr-pjcm published, and has it been updated?

GHSA-rc4v-99cr-pjcm was published on October 17, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦

📦 npm

Not in CISA KEV

CRITICAL severity

GHSA-rc4v-99cr-pjcm — @seal-security/mongoose-f…

CRITICALFix: Automattic/mongoose@f1efabf

GHSA-rc4v-99cr-pjcm is a critical-severity (CVSS 10) remote code execution vulnerability in @seal-security/mongoose-fixed. A fix is available for @seal-security/mongoose-fixed — see the affected versions and patch details below.

Prototype Pollution in ali-security/mongoose

Published

Oct 17, 2023

Updated

Oct 17, 2023

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Oct 17, 2023 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

0other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

@seal-security/mongoose-fixednpm

6downloads / week

Description

Impact

This vulnerability causes a Prototype Pollution in document.js, through functions such as findByIdAndUpdate(). For applications using Express and EJS, this can potentially allow remote code execution.

Patches

The original patched version for mongoose 5.3.3 did not include a fix for CVE-2023-3696. Therefore the existing version @seal-security/mongoose-fixed version 5.3.3 is affected by this vulnerability (though it is protected from CVE-2022-2564 and CVE-2019-17426). To mitigate this issue, a @seal-security/mongoose-fixed version 5.3.4 has been deployed. Note that this version is compatible with the original mongoose version 5.3.3, not version 5.3.4

References

https://security.snyk.io/vuln/SNYK-JS-MONGOOSE-5777721 https://github.com/advisories/GHSA-9m93-w8w6-76hh https://github.com/Automattic/mongoose/commit/f1efabf350522257364aa5c2cb36e441cf08f1a2

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`@seal-security/mongoose-fixed`	≥ 5.3.3&&< 5.3.4	5.3.4`npm install @seal-security/mongoose-fixed@5.3.4`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @seal-security/mongoose-fixed, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update @seal-security/mongoose-fixed to 5.3.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-rc4v-99cr-pjcm is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-rc4v-99cr-pjcm can be triaged on real exposure rather than presence alone.

Tailored to GHSA-rc4v-99cr-pjcm. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact This vulnerability causes a Prototype Pollution in document.js, through functions such as findByIdAndUpdate(). For applications using Express and EJS, this can potentially allow remote code execution. ### Patches The original patched version for mongoose 5.3.3 did not include a fix for CVE-2023-3696. Therefore the existing version @seal-security/mongoose-fixed version 5.3.3 is affected by this vulnerability (though it is protected from CVE-2022-2564 and CVE-2019-17426). To mitigate this issue, a @seal-security/mongoose-fixed version 5.3.4 has been deployed. Note that this version i

O3 Security · Impact-Aware SCA

Is GHSA-rc4v-99cr-pjcm in your dependencies?

O3 Security finds GHSA-rc4v-99cr-pjcm across npm dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

Scan my dependencies How O3 SCA works